WILHORST, Cora de, singer, born in New York city, 16 October, 1835. Her maiden name was Withers, and her father belonged to a well-known New York family. Her maternal grandfather, David Dun-ham, was associated with Robert Fulton in the construction of the first steamboat. Cora was educated in her native city, studied music, and became separated from her family through her marriage with her music-teacher Henri, Comte de Wilhorst. She then appeared in concerts with Sigismund Thalberg, the pianist, her debut taking place at Newport, Rhode Island, 21 August, 1856. She made her first appearance in opera at the New York academy of music as Lucia, 28 January, 1857. After visiting Paris and singing with Mario in "Don Pasquale," she returned to this country and began an operatic engagement in Philadelphia, 2 November, 1858. During the next four years Mme. de Wilhorst sang in the United States, opening the first opera-house in Cincinnati and the first music-hall in Chicago. She retired from the stage in 1860, but resumed her profession in Paris in 1869, singing in concerts. In 1870 she appeared in " Rigoletto" in that city, taking the place of Adelina Patti, who had gone to Russia. The Franco-Prussian war compelled her to give up a three-years' engagement to sing in the French capital. In February, 1871, she sang for the first time in Great Britain, appearing with Sims Reeves at the Crystal palace, Sydenham. She remained in England, taking part in oratorios, concerts, and festivals until 1874, when she married Oliver de Raucourt, and retired from the stage. In 1880 she returned to the United States, where she has since devoted herself to teaching singing. Mine. de Wilhorst claims to be the first American singer that began her operatic career in this country before studying abroad.